package com.chunuo.vod.service.impl;

import com.aliyun.vod.upload.impl.UploadVideoImpl;
import com.aliyun.vod.upload.req.UploadStreamRequest;
import com.aliyun.vod.upload.resp.UploadStreamResponse;
import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.exceptions.ClientException;
import com.aliyuncs.vod.model.v20170321.DeleteVideoRequest;
import com.aliyuncs.vod.model.v20170321.GetVideoPlayAuthRequest;
import com.aliyuncs.vod.model.v20170321.GetVideoPlayAuthResponse;
import com.chunuo.commonbase.exception.GuliException;
import com.chunuo.commonbase.exception.MyExceptionHandler;
import com.chunuo.commonutils.ResultCode;
import com.chunuo.vod.service.EduVideoService;
import com.chunuo.vod.utils.InitVideoUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.InputStream;

/**
 * 类的作用
 *
 * @author liujiamiao
 * @email 2544296058@qq.com
 * @date 2020-07-15 22:08
 */
@Service
public class EduVideoServiceImpl implements EduVideoService {

    @Value("${aliyun.vod.file.keyid}")
    private String accessKeyId;

    @Value("${aliyun.vod.file.keysecret}")
    private String accessKeySecret;


    /**
     * 上传视频
     * @param file
     * @return
     */
    @Override
    public String uploadVideo(MultipartFile file) {
        try {
            //获取文件名字
            String fileName = file.getOriginalFilename();
            //title：上传之后显示名称
            String title = fileName.substring(0, fileName.lastIndexOf("."));
            //inputStream：上传文件输入流
            InputStream inputStream = file.getInputStream();

            UploadStreamRequest request = new UploadStreamRequest(accessKeyId,accessKeySecret, title, fileName, inputStream);

            UploadVideoImpl uploader = new UploadVideoImpl();
            UploadStreamResponse response = uploader.uploadStream(request);

            String videoId = null;
            if (response.isSuccess()) {
                videoId = response.getVideoId();
            } else { //如果设置回调URL无效，不影响视频上传，可以返回VideoId同时会返回错误码。其他情况上传失败时，VideoId为空，此时需要根据返回错误码分析具体错误原因
                videoId = response.getVideoId();
            }
            return videoId;
        }catch(Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * 删除视频
     * @param id
     */
    @Override
    public void removeAlyVideo(String id) {
        try {
            //初始化对象
            DefaultAcsClient client = InitVideoUtils.initVodClient(accessKeyId,accessKeySecret);
            //创建删除视频request对象
            DeleteVideoRequest request = new DeleteVideoRequest();
            //向request设置视频id
            request.setVideoIds(id);
            //调用初始化对象的方法实现删除
            client.getAcsResponse(request);
        }catch(Exception e) {
            e.printStackTrace();
            throw new GuliException(ResultCode.ERROR.getCode(),"删除视频失败");
        }
    }

    @Override
    public String getPlayAuth(String id) {
        //创建初始化对象
        DefaultAcsClient client = InitVideoUtils.initVodClient(accessKeyId,accessKeySecret);
        //创建获取凭证request和response对象
        GetVideoPlayAuthRequest request = new GetVideoPlayAuthRequest();
        //向request设置视频id
        request.setVideoId(id);
        try {
            GetVideoPlayAuthResponse response = client.getAcsResponse(request);
            return response.getPlayAuth();
        } catch (ClientException e) {
            e.printStackTrace();
            throw new GuliException(40500,"视频凭证获取失败");
        }

    }


}
